Definition of ethinyl estradiol
:a very potent synthetic estrogen C20H24O2 used especially as an oral contraceptive
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ethinyl estradiol
noun
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First Known Use of ethinyl estradiol
1938
Medical Dictionary
ethinyl estradiol
noun
variants:
or
ethynylestradiol
play
\ˌeth-ə-nil-ˌes-trə-ˈdī-ˌȯl, -ˌōl\
or chiefly British
ethinyloestradiol
or
ethynyloestradiol
play
\ˌeth-ə-nil-ˌē-strə-ˈdī-ˌȯl, -ē-ˈstrad-ē-ˌȯl, -ˌōl\
medical Definition of ethinyl estradiol
:a white crystalline very potent synthetic estrogen C20H24O2 prepared from estrone and used in combination (as with norgestrel or norethindrone) as a birth control pill or alone in the treatment of menopausal symptoms or female hypogonadism or in the palliative treatment of prostate or breast cancer — see loestrin, minastrin, nuvaring, ortho evra, ortho-novum, ortho tri-cyclen, seasonale, seasonique, yasmin, yaz
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